US Optics B-25 5-25x52

• 5-25x magnification range: Covers the full span from precise mid-range work to confident long-range target engagement, so one riflescope can handle load development, competition, and extended-distance shooting.
• First focal plane illuminated reticle: The reticle stays proportional through the zoom range, keeping holdovers and ranging references consistent at any magnification while illumination improves visibility against dark targets or low-contrast backgrounds.
• Locking tactical turrets with EK2 stop: The turret system is built for dial-heavy shooting, helping prevent accidental movement in transport while giving a hard return point for fast, repeatable elevation resets.
• 52 mm objective with fully multicoated lenses: The large objective and coated optics support a bright, usable image across the magnification range, which matters when reading trace, mirage, and target detail at distance.
• Side parallax from 23 m to infinity: Fine parallax correction helps sharpen the image and reduce aiming error at varying distances, especially when shooting small targets at high magnification.

About the US Optics B Series

The US Optics B Series was built around the magnification ranges most often chosen by professional and precision-oriented shooters, with the line consisting of the B-10, B-17, and B-25 models. Within the U.S. Optics lineup, the series sat as a tactical riflescope family focused on practical dialing features rather than stripped-down hunting simplicity. Its design emphasizes repeatable adjustment control, with locking elevation and windage knobs, an EK2 stop, a revolution counter, and tool-free elevation zeroing to support shooters who regularly work across changing distances.

A defining trait of the series is its integrated control layout. U.S. Optics combined single-button reticle illumination with the parallax adjustment knob, keeping key controls close together and easy to access from the firing position. Depending on configuration, B-Series scopes were offered with either 1/10 mil or 1/4 IPHY turret adjustments, reflecting the line’s appeal to users with different correction systems and shooting backgrounds. In practical terms, the B Series was aimed at tactical optics users, long-range competitors, and serious field shooters who wanted robust mechanics, familiar magnification bands, and reticle options suited to holdover, ranging, and precision correction.

About the US Optics B-25 5-25x52

The US Optics B-25 5-25x52 is the long-range model in the B Series, built for shooters who need enough magnification for precise shot placement at distance without giving up a workable low end for positional shooting or target acquisition. Its 5-25x range makes it well suited to precision rifles, tactical bolt guns, and semi-automatic platforms used for extended-range work. At 5x, the scope remains manageable for scanning a stage or settling into improvised positions; at 25x, it gives the image scale needed for reading target detail, refining holds, and spotting impacts.

The optical system pairs a 52 mm objective with fully multicoated lenses, helping maintain image brightness and contrast as magnification increases. A 34 mm main tube supports a broad adjustment range, with up to 23.02 mrad of elevation and windage travel available for dialing. The first focal plane layout keeps reticle subtensions accurate throughout the zoom range, which is especially useful for shooters who alternate between dialing and holding. Illumination adds flexibility in poor light or against dark backgrounds, and the automatic shut-off function helps avoid unnecessary battery drain.

Mechanically, the B-25 is configured for serious turret use. Its lockable tactical turrets, double-turn layout, and Zero-Stop system are designed for repeatable corrections and a fast return to zero under match or field pressure. Side focus parallax adjustment from 23 m to infinity lets the shooter tune image sharpness for different distances, while the fast-focus eyepiece speeds reticle setup. With a 455.00 mm overall length and 1010.00 g weight, the scope clearly prioritizes stability, adjustment capacity, and long-range usability over minimal bulk.

About US Optics

U.S. Optics was founded in 1991 in Buena Park, California, and established its name around riflescopes and related shooting optics for demanding field use. The company has served competitive, hunting, and defense-shooting communities, with product development centered on practical adjustment systems, durable construction, and reticle choices suited to precision work. Among its notable riflescope families is the SN-3, and the company also helped pioneer the category now widely known as the low-power variable optic, or LPVO.

In later years, U.S. Optics expanded its commercial off-the-shelf offerings with lines such as the SR, ST, MR, LR, and ER series. After acquisition by DRSG, the company moved to Kalispell, Montana, in 2017, then joined ZRO Delta and moved to North Carolina in 2019. Its engineering team is located in Connelly Springs, North Carolina, reflecting the brand’s continued focus on U.S.-based riflescope design and development.

Main Features

• Magnification: 5.00 x - 25.00 x
• Objective lens diameter: 52.00 mm
• Main tube diameter: 34 mm
• Reticle position: 1. focal plane - FFP
• Reticle illumination: Yes
• Daytime illumination: Yes
• Automatic turn off: Yes
• Turret type: Tactical - Lockable
• Zero-Stop: Yes
• Turret turns: DT - Double Turn
• Click unit: MIL / MIL
• Elevation adjustment range: 23.02 mrad / 79.00 MOA
• Windage adjustment range: 23.02 mrad / 79.00 MOA
• Parallax adjustment: Yes - side focus
• Parallax setting: 23 m to infinity
• Eye relief: 89.00 mm - 90.00 mm
• Field of view: 1.70 m/100m - 5.40 m/100m
• Exit pupil: 2.00 mm - 10.00 mm
• Diopter adjustment: -3/+2
• Fast focus eyepiece: Yes
• Lens coatings: Fully Multicoated
• Length: 455.00 mm
• Weight: 1010.00 g
• Nitrogen filled: Yes
• Waterproof: Yes
• Fogproof: Yes
• Shockproof: Yes

Warranty

US Optics B-25 5-25x52 is covered by a 10-year warranty.